Ballots to be Impounded Until NLRB Decides on University Appeal of Decision to Allow Vote

EVANSTON, Ill.—Northwestern University football players cast paper ballots in the team cafeteria on Friday morning, ending one stage of an epic battle over the prospect of unionizing college sports teams but leaving the result far from certain.

On Thursday, the National Labor Relations Board said the ballots would be impounded until it reaches a decision on school officials' appeal of the ruling that allowed the vote to take...